Alright, let's solve this math problem step by step. First, we have the number 280. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 304. So, we're going to take the number 280 and add it to itself 304 times.
Step 1: 0 + 280 = 280
Step 2: 280 + 280 = 560
Step 3: 560 + 280 = 840
Step 4: 840 + 280 = 1120
Step 5: 1120 + 280 = 1400
Step 6: 1400 + 280 = 1680
Step 7: 1680 + 280 = 1960
Step 8: 1960 + 280 = 2240
Step 9: 2240 + 280 = 2520
Step 10: 2520 + 280 = 2800
Step 11: 2800 + 280 = 3080
Step 12: 3080 + 280 = 3360
Step 13: 3360 + 280 = 3640
Step 14: 3640 + 280 = 3920
Step 15: 3920 + 280 = 4200
Step 16: 4200 + 280 = 4480
Step 17: 4480 + 280 = 4760
Step 18: 4760 + 280 = 5040
Step 19: 5040 + 280 = 5320
Step 20: 5320 + 280 = 5600
Step 21: 5600 + 280 = 5880
Step 22: 5880 + 280 = 6160
Step 23: 6160 + 280 = 6440
Step 24: 6440 + 280 = 6720
Step 25: 6720 + 280 = 7000
Step 26: 7000 + 280 = 7280
Step 27: 7280 + 280 = 7560
Step 28: 7560 + 280 = 7840
Step 29: 7840 + 280 = 8120
Step 30: 8120 + 280 = 8400
Step 31: 8400 + 280 = 8680
Step 32: 8680 + 280 = 8960
Step 33: 8960 + 280 = 9240
Step 34: 9240 + 280 = 9520
Step 35: 9520 + 280 = 9800
Step 36: 9800 + 280 = 10080
Step 37: 10080 + 280 = 10360
Step 38: 10360 + 280 = 10640
Step 39: 10640 + 280 = 10920
Step 40: 10920 + 280 = 11200
Step 41: 11200 + 280 = 11480
Step 42: 11480 + 280 = 11760
Step 43: 11760 + 280 = 12040
Step 44: 12040 + 280 = 12320
Step 45: 12320 + 280 = 12600
Step 46: 12600 + 280 = 12880
Step 47: 12880 + 280 = 13160
Step 48: 13160 + 280 = 13440
Step 49: 13440 + 280 = 13720
Step 50: 13720 + 280 = 14000
Step 51: 14000 + 280 = 14280
Step 52: 14280 + 280 = 14560
Step 53: 14560 + 280 = 14840
Step 54: 14840 + 280 = 15120
Step 55: 15120 + 280 = 15400
Step 56: 15400 + 280 = 15680
Step 57: 15680 + 280 = 15960
Step 58: 15960 + 280 = 16240
Step 59: 16240 + 280 = 16520
Step 60: 16520 + 280 = 16800
Step 61: 16800 + 280 = 17080
Step 62: 17080 + 280 = 17360
Step 63: 17360 + 280 = 17640
Step 64: 17640 + 280 = 17920
Step 65: 17920 + 280 = 18200
Step 66: 18200 + 280 = 18480
Step 67: 18480 + 280 = 18760
Step 68: 18760 + 280 = 19040
Step 69: 19040 + 280 = 19320
Step 70: 19320 + 280 = 19600
Step 71: 19600 + 280 = 19880
Step 72: 19880 + 280 = 20160
Step 73: 20160 + 280 = 20440
Step 74: 20440 + 280 = 20720
Step 75: 20720 + 280 = 21000
Step 76: 21000 + 280 = 21280
Step 77: 21280 + 280 = 21560
Step 78: 21560 + 280 = 21840
Step 79: 21840 + 280 = 22120
Step 80: 22120 + 280 = 22400
Step 81: 22400 + 280 = 22680
Step 82: 22680 + 280 = 22960
Step 83: 22960 + 280 = 23240
Step 84: 23240 + 280 = 23520
Step 85: 23520 + 280 = 23800
Step 86: 23800 + 280 = 24080
Step 87: 24080 + 280 = 24360
Step 88: 24360 + 280 = 24640
Step 89: 24640 + 280 = 24920
Step 90: 24920 + 280 = 25200
Step 91: 25200 + 280 = 25480
Step 92: 25480 + 280 = 25760
Step 93: 25760 + 280 = 26040
Step 94: 26040 + 280 = 26320
Step 95: 26320 + 280 = 26600
Step 96: 26600 + 280 = 26880
Step 97: 26880 + 280 = 27160
Step 98: 27160 + 280 = 27440
Step 99: 27440 + 280 = 27720
Step 100: 27720 + 280 = 28000
Step 101: 28000 + 280 = 28280
Step 102: 28280 + 280 = 28560
Step 103: 28560 + 280 = 28840
Step 104: 28840 + 280 = 29120
Step 105: 29120 + 280 = 29400
Step 106: 29400 + 280 = 29680
Step 107: 29680 + 280 = 29960
Step 108: 29960 + 280 = 30240
Step 109: 30240 + 280 = 30520
Step 110: 30520 + 280 = 30800
Step 111: 30800 + 280 = 31080
Step 112: 31080 + 280 = 31360
Step 113: 31360 + 280 = 31640
Step 114: 31640 + 280 = 31920
Step 115: 31920 + 280 = 32200
Step 116: 32200 + 280 = 32480
Step 117: 32480 + 280 = 32760
Step 118: 32760 + 280 = 33040
Step 119: 33040 + 280 = 33320
Step 120: 33320 + 280 = 33600
Step 121: 33600 + 280 = 33880
Step 122: 33880 + 280 = 34160
Step 123: 34160 + 280 = 34440
Step 124: 34440 + 280 = 34720
Step 125: 34720 + 280 = 35000
Step 126: 35000 + 280 = 35280
Step 127: 35280 + 280 = 35560
Step 128: 35560 + 280 = 35840
Step 129: 35840 + 280 = 36120
Step 130: 36120 + 280 = 36400
Step 131: 36400 + 280 = 36680
Step 132: 36680 + 280 = 36960
Step 133: 36960 + 280 = 37240
Step 134: 37240 + 280 = 37520
Step 135: 37520 + 280 = 37800
Step 136: 37800 + 280 = 38080
Step 137: 38080 + 280 = 38360
Step 138: 38360 + 280 = 38640
Step 139: 38640 + 280 = 38920
Step 140: 38920 + 280 = 39200
Step 141: 39200 + 280 = 39480
Step 142: 39480 + 280 = 39760
Step 143: 39760 + 280 = 40040
Step 144: 40040 + 280 = 40320
Step 145: 40320 + 280 = 40600
Step 146: 40600 + 280 = 40880
Step 147: 40880 + 280 = 41160
Step 148: 41160 + 280 = 41440
Step 149: 41440 + 280 = 41720
Step 150: 41720 + 280 = 42000
Step 151: 42000 + 280 = 42280
Step 152: 42280 + 280 = 42560
Step 153: 42560 + 280 = 42840
Step 154: 42840 + 280 = 43120
Step 155: 43120 + 280 = 43400
Step 156: 43400 + 280 = 43680
Step 157: 43680 + 280 = 43960
Step 158: 43960 + 280 = 44240
Step 159: 44240 + 280 = 44520
Step 160: 44520 + 280 = 44800
Step 161: 44800 + 280 = 45080
Step 162: 45080 + 280 = 45360
Step 163: 45360 + 280 = 45640
Step 164: 45640 + 280 = 45920
Step 165: 45920 + 280 = 46200
Step 166: 46200 + 280 = 46480
Step 167: 46480 + 280 = 46760
Step 168: 46760 + 280 = 47040
Step 169: 47040 + 280 = 47320
Step 170: 47320 + 280 = 47600
Step 171: 47600 + 280 = 47880
Step 172: 47880 + 280 = 48160
Step 173: 48160 + 280 = 48440
Step 174: 48440 + 280 = 48720
Step 175: 48720 + 280 = 49000
Step 176: 49000 + 280 = 49280
Step 177: 49280 + 280 = 49560
Step 178: 49560 + 280 = 49840
Step 179: 49840 + 280 = 50120
Step 180: 50120 + 280 = 50400
Step 181: 50400 + 280 = 50680
Step 182: 50680 + 280 = 50960
Step 183: 50960 + 280 = 51240
Step 184: 51240 + 280 = 51520
Step 185: 51520 + 280 = 51800
Step 186: 51800 + 280 = 52080
Step 187: 52080 + 280 = 52360
Step 188: 52360 + 280 = 52640
Step 189: 52640 + 280 = 52920
Step 190: 52920 + 280 = 53200
Step 191: 53200 + 280 = 53480
Step 192: 53480 + 280 = 53760
Step 193: 53760 + 280 = 54040
Step 194: 54040 + 280 = 54320
Step 195: 54320 + 280 = 54600
Step 196: 54600 + 280 = 54880
Step 197: 54880 + 280 = 55160
Step 198: 55160 + 280 = 55440
Step 199: 55440 + 280 = 55720
Step 200: 55720 + 280 = 56000
Step 201: 56000 + 280 = 56280
Step 202: 56280 + 280 = 56560
Step 203: 56560 + 280 = 56840
Step 204: 56840 + 280 = 57120
Step 205: 57120 + 280 = 57400
Step 206: 57400 + 280 = 57680
Step 207: 57680 + 280 = 57960
Step 208: 57960 + 280 = 58240
Step 209: 58240 + 280 = 58520
Step 210: 58520 + 280 = 58800
Step 211: 58800 + 280 = 59080
Step 212: 59080 + 280 = 59360
Step 213: 59360 + 280 = 59640
Step 214: 59640 + 280 = 59920
Step 215: 59920 + 280 = 60200
Step 216: 60200 + 280 = 60480
Step 217: 60480 + 280 = 60760
Step 218: 60760 + 280 = 61040
Step 219: 61040 + 280 = 61320
Step 220: 61320 + 280 = 61600
Step 221: 61600 + 280 = 61880
Step 222: 61880 + 280 = 62160
Step 223: 62160 + 280 = 62440
Step 224: 62440 + 280 = 62720
Step 225: 62720 + 280 = 63000
Step 226: 63000 + 280 = 63280
Step 227: 63280 + 280 = 63560
Step 228: 63560 + 280 = 63840
Step 229: 63840 + 280 = 64120
Step 230: 64120 + 280 = 64400
Step 231: 64400 + 280 = 64680
Step 232: 64680 + 280 = 64960
Step 233: 64960 + 280 = 65240
Step 234: 65240 + 280 = 65520
Step 235: 65520 + 280 = 65800
Step 236: 65800 + 280 = 66080
Step 237: 66080 + 280 = 66360
Step 238: 66360 + 280 = 66640
Step 239: 66640 + 280 = 66920
Step 240: 66920 + 280 = 67200
Step 241: 67200 + 280 = 67480
Step 242: 67480 + 280 = 67760
Step 243: 67760 + 280 = 68040
Step 244: 68040 + 280 = 68320
Step 245: 68320 + 280 = 68600
Step 246: 68600 + 280 = 68880
Step 247: 68880 + 280 = 69160
Step 248: 69160 + 280 = 69440
Step 249: 69440 + 280 = 69720
Step 250: 69720 + 280 = 70000
Step 251: 70000 + 280 = 70280
Step 252: 70280 + 280 = 70560
Step 253: 70560 + 280 = 70840
Step 254: 70840 + 280 = 71120
Step 255: 71120 + 280 = 71400
Step 256: 71400 + 280 = 71680
Step 257: 71680 + 280 = 71960
Step 258: 71960 + 280 = 72240
Step 259: 72240 + 280 = 72520
Step 260: 72520 + 280 = 72800
Step 261: 72800 + 280 = 73080
Step 262: 73080 + 280 = 73360
Step 263: 73360 + 280 = 73640
Step 264: 73640 + 280 = 73920
Step 265: 73920 + 280 = 74200
Step 266: 74200 + 280 = 74480
Step 267: 74480 + 280 = 74760
Step 268: 74760 + 280 = 75040
Step 269: 75040 + 280 = 75320
Step 270: 75320 + 280 = 75600
Step 271: 75600 + 280 = 75880
Step 272: 75880 + 280 = 76160
Step 273: 76160 + 280 = 76440
Step 274: 76440 + 280 = 76720
Step 275: 76720 + 280 = 77000
Step 276: 77000 + 280 = 77280
Step 277: 77280 + 280 = 77560
Step 278: 77560 + 280 = 77840
Step 279: 77840 + 280 = 78120
Step 280: 78120 + 280 = 78400
Step 281: 78400 + 280 = 78680
Step 282: 78680 + 280 = 78960
Step 283: 78960 + 280 = 79240
Step 284: 79240 + 280 = 79520
Step 285: 79520 + 280 = 79800
Step 286: 79800 + 280 = 80080
Step 287: 80080 + 280 = 80360
Step 288: 80360 + 280 = 80640
Step 289: 80640 + 280 = 80920
Step 290: 80920 + 280 = 81200
Step 291: 81200 + 280 = 81480
Step 292: 81480 + 280 = 81760
Step 293: 81760 + 280 = 82040
Step 294: 82040 + 280 = 82320
Step 295: 82320 + 280 = 82600
Step 296: 82600 + 280 = 82880
Step 297: 82880 + 280 = 83160
Step 298: 83160 + 280 = 83440
Step 299: 83440 + 280 = 83720
Step 300: 83720 + 280 = 84000
Step 301: 84000 + 280 = 84280
Step 302: 84280 + 280 = 84560
Step 303: 84560 + 280 = 84840
Step 304: 84840 + 280 = 85120

So, 280*304 = 85120